I need help please
Thread Starter
Newbie
Joined: Oct 2025
Posts: 3
Likes: 0
2017 C300 Base
I need help please
I have a 2017 w205 base at 130k and i have this squeaking wont go away i changed the belt,tensioner and idler but it still stays my dealer had their mechanic check it and they say nothings wrong my dad thinks it may be the water pump but the car isnt overheating and doesnt leak it doesnt even leak water when the ac runs the squeaking is bad when im in drive or reverse or the ac is up higher than 5 if anyone who is a tech or has had the same experience could give me some advice i would really appreciate because im not sure if i should just buy the ac compressor or a water pump i have a video but i cannot post it
Senior Member
Joined: Mar 2025
Posts: 406
Likes: 147
From: Toronto
2025 AMG G 63 SUV /// 2025 AMG GT 63 S E Performance 4 Door Coupé
Have you checked to see if it’s the power steering? Dry steer lock to lock and listen for any changes in the noise then report back to us.
Cheers and happy hunting
P.S. A sound clip would be helpful. A video taken under the hood would be even more helpful.
Cheers and happy hunting
P.S. A sound clip would be helpful. A video taken under the hood would be even more helpful.
Out Of Control!!
Joined: Apr 2019
Posts: 11,958
Likes: 6,802
From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
replacing tensioner and idlers was wise!
Compare original belt numbers with new one: a lot of corrupted belt cross-reference has spread all around starting with the EPC source.
The original belt reference is what your engine configuration needs - Ignore databases.
Compare original belt numbers with new one: a lot of corrupted belt cross-reference has spread all around starting with the EPC source.
The original belt reference is what your engine configuration needs - Ignore databases.
